Unbound Module

The unbound module performs queries against a DNS service to allow FQDNs to be resolved during request processing.

Configuration Settings

File to read unbound configuration details from.

filename = "${raddbdir}/mods-config/unbound/default.conf"

Timeout for unbound queries.

timeout = 3000

resolv.conf file to instruct unbound to load resolvers from. Defaults to not set. Without this set, unbound queries root DNS servers. If a local caching DNS server is available that will improve performance.

resolvconf = "/etc/resolv.conf"

hosts file to load data from. Defaults to not set.

hosts = "/etc/hosts"

xlat for DNS resolution

An xlat based on the instance name can be used to perform DNS lookups.

Example

%dns(www.example.com, A)
%dns(www.example.com, AAAA)

Given an instance dns the above xlats will perform A record and AAAA record lookups on www.example.com.

Example

%dns(1.1.168.192.in-addr.arpa, PTR)

The above example will perform reverse DNS lookup on 192.168.1.1

Example

%dns(example.com, MX, 1)

The above example will perform an MX lookup on example.com returning just the first result.

Default Configuration

unbound dns {
}